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Online Data: Standard VGPM

1080 by 2160 Monthly XYZ files from VIIRS Data

note: data updated 06.22.2018 using the new VIIRS.R2018 reprocessing results

To get these data, please click on the file name(s) that you have selected and save locally on your computer. The individual xyz files are gzipped (use gunzip to uncompress) and the tar files contain gzipped xyz files.

different grid size, timestep, or format?

Data Selection

You can either download annual tar files with the data we have for each year, or you can access the individual monthly files at the end of this page.

Annual Tar Files

vgpm.v.2012.xyz.tar• 2012 data: ~ 117 MB of compressed data
vgpm.v.2013.xyz.tar• 2013 data: ~ 127 MB of compressed data
vgpm.v.2014.xyz.tar• 2014 data: ~ 127 MB of compressed data
vgpm.v.2015.xyz.tar• 2015 data: ~ 128 MB of compressed data
vgpm.v.2016.xyz.tar• 2016 data: ~ 128 MB of compressed data
vgpm.v.2017.xyz.tar• 2017 data: ~ 129 MB of compressed data
vgpm.v.2018.xyz.tar• 2018 data: ~ 128 MB of compressed data
vgpm.v.2019.xyz.tar• 2019 data: ~   44 MB of compressed data

xyz file naming convention

vgpm.yyyyddd.all.xyz.gz

vgpm = net primary production (units of mg C / m**2 / day) based on the standard vgpm algorithm
yyyy = year
ddd = day of year of the start of each monthly file
all = all pixels output, including those with no data (nodata = -9999)
xyz = text file, where x = longitude, y = latitude and z = npp value
gz = compressed with gzip (uncompress with gunzip)

note: The xyz files have a single header line, indicating the order of the variables and the value of nodata.

npp is based on the standard vgpm, using modis chl, sst4, and par as input; clouds have been filled in the input data using our own gap-filling software.

These xyz data have been extracted from 1080 x 2160 global monthly grids, and the locations given represent the center of each pixel.

For citation, please reference the original vgpm paper by Behrenfeld and Falkowski, 1997a as well as the Ocean Productivity site for the data.

Monthly Files

 20122013201420152016201720182019
January----- 2013001 2014001 2015001 2016001 2017001 2018001 2019001
February 2012032 2013032 2014032 2015032 2016032 2017032 2018032 2019032
March 2012061 2013060 2014060 2015060 2016061 2017060 2018060 2019060
April 2012092 2013091 2014091 2015091 2016092 2017091 2018091 2019091
May 2012122 2013121 2014121 2015121 2016122 2017121 2018121-----
June 2012153 2013152 2014152 2015152 2016153 2017152 2018152-----
July 2012183 2013182 2014182 2015182 2016183 2017182 2018182-----
August 2012214 2013213 2014213 2015213 2016214 2017213 2018213-----
September 2012245 2013244 2014244 2015244 2016245 2017244 2018244-----
October 2012275 2013274 2014274 2015274 2016275 2017274 2018274-----
November 2012306 2013305 2014305 2015305 2016306 2017305 2018305-----
December 2012336 2013335 2014335 2015335 2016336 2017335 2018335-----


Last modified: 22 June 2018
by:  Robert O'Malley

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Field DataSite Map Land / Ocean Merge Highlights / Results